code: def setUp(self):
      self.f = None
  
imports: import multiprocessing
  import platform
  import os
  import struct
  import sys
  import unittest
  from test.support import verbose, cpython_only, get_pagesize
  from test.support.import_helper import import_module
  from test.support.os_helper import TESTFN, unlink
label_desc: Use image node_id 1 for calling the TestFcntl obj's underlying member method code with example usage: obj.setUp() without return types